I'm using Highcharts column chart and I want it to be 100% width responsive chart. The container is a simple <div> with no any formatting. When the document loads, the chart is always fixed width 600x400px size. If I resize window or switch to another browser tab, the chart fills the width and becomes responsive full width chart just like I wanted. If I reload page, it's fixed width again. I tried setting width to both container and chart, however, nothing helps. If I move the container div one level above the parent div, It works. How to make the chart become full width on page load also?

Thanks